Umm this is more a suggestion for MSN6... I might be ahead of things a bit, but I think some sort of hacking that allows you to use the "create your own emoticons" feature to allow you to put larger pictures (not just emoticons) as part of the chat. Sort of like putting an image right in a post. I don't know if this is possible, but it would be a great feature; I think AIM has something like it.
Suggestions needed!!
